People should start using public transport instead of using their private cars.— _________ The streets in Shandong are too crowded as it is in Jinan

Constant practice has erased my accent to a point_____ people think I’m a native speaker.

How about going out for a break—________. We’ve been working for three hours.

I’m expecting for long to have a drone(无人机)to take photos, but my parents refuse to buy _______for me.

He must have finished his homework for a long time, _____ he?